Picking motion for looms for weaving



Oct. 1 6, 1928.

2 Sheets-She 1 Filed July 9, L92

0a, 16, 1928. .A. cAss PICKING MOTION FOR LOOIIS FOR WEAVING Filed July9, 192"! 2 Sheets-Sheet 2 Patented Oct. 16, 1928 UNITED STATES: PATENTOFFICE.

ALBERT CASS, OF MANCHESTER, ENGLAND, 'ASSIG-NOR- OF ONE-HALF TO JAMESROBINSON AND'-ALFRED ACKBOYD, BOTH OF EC CLES, ENGLAND.

PICKING Mo'rioN ron Looms For; WEAVING.

. Application filedluly 9, 1927,

which the picker slides in a slot or groove in the shuttle box bottomand is operated by a depending lever.

According to the present invention the motion is imparted to thedepending lever from a rotating disc which carries on its'face a cam,wedge or pro ection adapted toengage,

in at each revolution a runner or roller carried on the end of a lever,the other end oi which engages a projecting member or plates on a rod sothat an oscillating movement will be imparted to the latter at eachrevolution of the disc and the movement transmitted to the.pickerthrough the depending lever which at its lower end is aiiixed tothe oscillating rod. The invention will be described with refer ence tothe accompanying drawings Fig. 1 is an end view of an underpick loomwith the invention applied thereto. Fig. 2 is a section on line 22Fig. 1. Fig. 3 is a plan view of lever'C carrying the roller C.

Fig. 4 is an end view of same. Fig. 5 is a plan view of the oscillatingrod D. I

Fig. 6 is a detail of bracket 0. j A rotary disc A is mounted on thetappet shaft A or on a stud 0r spindle immediatel below the drivingshaft and is driven through spur or other gearing from a wheel on thedriving shaft. A projection B having'aninclined, wedge shaped, cam orcurved surface 0nd roller C which engages with theface of a plate orprojection D afiixed to a rod D carried in suitable bearings (Z so thatit can oscilate therein. A spring d is aflixed at one end to an arm clextending from the rod D and at the other end is ailixed to the frame ofthe loom and any oscillating movement given to the rodD is againsttheaction of this spring which brings the rod back to its normal position.A projection d on the rod D limits the is mounted on the face of thedisc A, the pre-' Serial No. 204,626, and in Britain July 15,1926.

, movement of the latter in thereverse direction. 7 j 1 The dependinglever E is forked at its lower end and two members of the forked endpass 7 one at either side of the rod D which is fiato tened at thispoint and are pivotally connected thereto by the-pinor bolt 6 so that asthe bar D oscillates the lever E will oscillate with it but is at thesame time free to move'in direction about its pivot parallel; to the barso that it may follow the movement of the slay G without the mechanismbeing carriedv on the slay sword G v i The upper end of the vertical'lever E is forked to receive the end ofthe lever or rod E actuating thepicker, the other end of this lever or rod Ebeing turned upwardsvertically to project through the slot or groove in the shuttle box andengage thepicker.

The operation of the mechanismris. as f01- a lows :on each revolution ofthedisc A the projection B engages the roller C and causes the lever Cto oscillate about its pivot. This I movement causes the roller C tomove over the face of the plateD and move the latter thereby giving arotar movement to the bar D against the action 0 the spring d andthismotion is in turn imparted to the lever E and from this lever to thelever E actuating the picker. When the projection B has passed theroller D the spring 03 returns the different parts of the mechanism totheir original positions so that the roller C is again in contactWiththe face of the disc A'ready to be actuated by the projection on thenext revolution of the disc. r v In order that the driving mechanism ofthe loom may be rotated in the backward direction for one or more. pickswh'en necesary without actuating the picking mechanism, the 5 bracket 0carrying the roller C is looselyv mounted on the lever C and isprovided-with a projection c which engages the projection 0 on the leverC to move the latter when the disc A is rotating in the forwarddirection 1 a but which will allow the roller C to be liftedwithoutmoving the lever C when the former is engaged by the projection B whenthe .disc is rotated in the reverse, direction. I

invention and desire What I claim as m to protect by Letters I atent.is 1. An un'derpick motion for a loom for weaving comprising apickersliding in a slot 'in the shuttle box bottom, a lever dependingtherefrom and pivoted to the picker by which no the picker is operated,a rod to which the lower end of the depending lever is affixed, hearingsin the frame in which the rod is carried and a projectingplate affixedto the rod, a rotary disc, a tappet shaft on which the disc is mounted,a cam on the face of the disc,

a lever pivoted between its ends to the frame one end contacting withthe cam, a roller on the other end of the lever to contact with theprojecting plate on the aforesaid rod whereby an oscillating movementwill be imparted to the later at each revolution of the disc and themovement transmitted to the picker through the depending lever.

52. An underpich motion for a loom for weaving comprising a. slay sword,a pickerits ends to the frame one end contacting the cam, a roller onthe other end of the lever to contact with the projecting plate on theaforea said rod whereby an oscillating movement will he imparted to thelatter at each revolution of the disc and the movement transmitted tothepicker through the depending lever so that it can follow the movementof the slay sword without being connected thereto.

3. An underpick motion for a loom as in claim 1 having the rolleractuated by' a projection on a bracket loosely mounted on the lever toallow the disc to be rotated in the backwarddirection withoutimparting'move ment to the lever.

4. Anunderpiek motion for a loom for weaving as in claim 1 having aspring against the tension of which the oscillating rod is moved tobring all the parts of the mechanism back to their initial positionsafter the cam on the disc has passed out of contact with the roll-er onthe end of the pivoted lever.

In testimony whereof I havehereunto set my hand, this 21st day of June1927. v

. ALBERT CASS

